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Let \( y=y(x) \) be the solution of the differential equation \( \cos \)
P \( x \frac{d y}{d x}+2 y \sin x=\sin 2 x, x \in\left(0, \frac{\pi}{2}\right) \). If \( y(\pi / 3)=0 \), then \( y \)

W \( (\pi / 4) \) is equal to :
[JEE Main-2020 (September)]
(a) \( \frac{1}{\sqrt{2}}-1 \)
(b) \( \sqrt{2}-2 \)
(c) \( 2-\sqrt{2} \)
(d) \( 2+\sqrt{2} \)
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